Improper access control in Discourse - CVE-2023-49099
Published: January 9, 2024 / Updated: July 1, 2026
Vulnerability identifier: #VU136608
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-49099
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in secure upload URLs associated with posts when handling direct requests to protected uploads. A remote attacker can access a secure upload URL to disclose sensitive information.
User interaction is required to obtain or follow the upload URL.
Affected software
Discourse
How to mitigate CVE-2023-49099
Install security update from vendor's website.
Discourse - addressed in versions 3.1.3, 3.2.0 beta3